Albert pallis



' (No ModeL) A. PALLE.

BLASTING CARTRIDGE.

,685. Patented Apr. 1, 1890,

ATTORNEY r s erai w m 3.1. is. ii this BLAST? hiG 2.

SPEGIFECELIQN forming part of Letters Patent No. 424,68 dated April 1 lhi ih Application iilsii March 29, 1889, Serial lilo. 305,234. ,(ll'o me lclr) 10 Figure 1 is a perspective View of my new cartridge. Fig. 2 is a longitudinal sectional elevation of the same; and Fig. 3 is a trans Verse sectional view.

The invention Will first be described in con nection withthe (lrewings, end then pointed out in the claims.

A represents a shell oi paper or other suitable materiel; charged with a slow explosive B, and within the materiel in shell his the inner shell or tube 0, of lead or tin, civil this is charged with glycerine or other matter l), which becomes explosive when mesa oyi ition with the slow explosive B, descrihedhe- 10W.

The slow explosive B used in the shell A is composed of nitrate of potash or soda, fortyiive parts; sawdust or other earthy matter, fifteen parts; cemphor, three parts; and iiour of sulphur, fifteen parts.

The cartridge may be provided with an electric wire E, or with afnse F, for explhcl ing the cartridge after it is placed and. rammed By constructing the cartridge as described,

the same may be hsoilietl \i'ithoiit danger of explosion, and, when placed. for blasting, the hole may be strongly rammed with-impunity, enclwvhen ignited the explosion of the two charges will be in succession, a heevyfollow ing' a light expiosioih which renders the can tridge much more efiective their if the Whole charge were exploded at once.

i l-ai ing thus (lescriheti my invention, Whst I claim as new, and desire to secure 5 Patent, is

l. The cartridge herein shown and described, consisting in a shell containing a slow-berm ing explosive, another shell inelosed within the SlOW'bHifilBg explosive and eoni'cii'iicg suhste'cce non-explosive by itself, will unite with the slovwhurning exgilosive' when the letter is explosive, suhste 2. The Gi-lilli 'e snown amt I smee'consis' in a paper centeim ing aslow i losivo Ben her metallic shell (Lot tin lezul, emhei'iiied in explosive l3, and containing glyceriiie or other were matter I); not explosive by it but which will unite with the sloW-hiii" c explosive, when the letter is ignited, and form a rapid explosive, substantially as forth.

ii ht which I,

form rapid. 

